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1796, Edward Jenner was a physician and scientist who developed the idea of vaccines and he created the Small pox vaccine it was the first one ever created.
-The name vaccine came from the Variolae vaccine (Cow Pox).
The symptoms are fever, vomiting, ulcers, skin rashes, skin filled with fluid blisters, bumps then scabbed over and fell off leaving scars

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In 1885, Louis Pasteur was a french chemist and microbiologist. He did a lot of research and he understood the causes and how to prevent the disease.
- Hygiene, public health
-  He was one of the founders of modern bacteriology
- He is credited with saving millions of lives for the vaccine for rabies

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1890, Emil von behring was a physiologist
- He got a Nobel Prize in physiology
- He discovered diphtheria
-The disease is caused by salmonella serotype
The symptoms- high fever for many days, weakness, stomach pain, constipation, headaches, vomiting

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1897, Waldemar Haffkine  was a bacteriologist and known for his pioneering work in vaccines
The plague is caused by bacterium yersinia pestis
The symptoms- Fever, headache, vomiting, swollen lymph nodes and painful, Discoloration of skin, swollen nodes it breaks open
The lymph nodes appear close to where the bacteria entered

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1921, Albert Calmette
Caused by mycobacterium tuberculosis
- tuberculosis affects the lungs and other parts of the body
Some infections show no symptoms (latent)
- It kills half of the people infected
some symptoms that you can get are cough with blood with mucus, fever, night sweats, weight loss
- It spread throw air

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1932, Jean Laigret
Symptoms- chills, fever, loss of appetite, nausea, muscle pain,headaches
- the symptoms improve in 5 days
- 15% of people with a day of improvement comes back to stomach pain liver damage that causes yellow skin
- spreads by a bite of an infected mosquito

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1937, Anatol Smorodinstev
cause is influenza viruses
symptoms- fever, runny nose,sore throat,muscle pain,headache,coughing fatigue
it lasts 2-8 days
it can progress to pneumonia

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1963, This is caused by measles virus
the symptoms are developed in 10-12 days when exposed to an infected person. It lasts 7-10 days
The symptoms are fever that can get to more than 40C- 104F, coughing, runny nose, and imflamed eyes, ear infection
- Small spots can form in the mouth
- red flat rashes start on the face
less common symptoms are seizures, blindness, or inflammation of the brain
how you get infected ?? contact with mouth

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1970, its known as the german measles
caused by the rubella virus, many people do not notice they have it
symptoms rashes, itch, swollen lymph, fever, sore throat,fatigue,joint pain, bleeding problems,testicular swelling, encephalitis, inflammation of nerves, brain problems
and if you are pregnant it leads to miscarriage or the child being born with rubella syndrome

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1977, it is caused by infection with viruses or bacteria and also by microoganisms
symptoms are dry cough, chest pain, fever, having a hard time breathing
you are diagnosed based on symptoms and a chest x- ray, blood test

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1984 it is caused by varicella zoster virus
symptoms are itchy blisters, rashes, fever, tiredness and headaches sometimes even inflammation of the brain

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1998 targets infants and children caused by diarrhoeal disease

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2000 used to protect infants and young children this is caused by bacterium streptococcus pneumoniae
symptoms are fever, decreased appetie irriability, reactions at the sight of injection, sleepiness, poor sleep,

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2003 new versions of the vaccine are made twice a year as it changes

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2013, causes epidemics of many diseases like hand, foot and mouth for children. It causes polio like syndrome and permanent paralysis.
The symptoms are fever

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2015 it is a mosquito borne infectious disease that hurts us humans and even animals.
The symptoms are fever, tiredness, vomiting headaches, serizures, coma, death

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2019 caused by ebolaviruses.
The symptoms are fever, sore throat, muscle pain, and headaches and after a while it turns into vomiting diarrhoea, rashes and decreased liver and kidney function and causes people to bleed internally and externally
it kills 25 and 90% of people infected.

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2020 it is caused by virus
- first was identified in Wuhan, China
- it quickly spread worldwide
The symptoms are fever, cough,headache, fatigue, breathing difficultie, loss of smell, and loss of taste